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. Author manuscript; available in PMC: 2015 Aug 25.
Published in final edited form as: J Emot Behav Disord. 2014 May 1;23(2):67–77. doi: 10.1177/1063426614532690

Table 3.

Test of Group Differences.

Outcome variable Contrast estimate SE Z statistic p value Effect size (Cohen’s d)
IOWA CRS OD −1.20 0.48 −2.48 .01* .35
SSRS-SSS 3.45 1.51 2.28 .02* .32
IRS #1 −0.01 0.19 −0.04 .97 .01
IRS #2 0.10 0.21 0.49 .62 .07
IRS #3 −0.24 0.21 −1.15 .25 .15
IRS #4 −0.20 0.22 −0.92 .36 .14
IRS #5 0.14 0.21 0.66 .51 .10
IRS #6 −0.15 0.18 −0.84 .40 .13

OWA CRS OD = Iowa Connors Oppositional/Defiant Subscale; SSRS-SSS = Social Skills Rating Scale–Social Skills Subscale; IRS #1 = Impairment Rating Scale Impairment Playmates; IRS #2 = Impairment Rating Scale Impairment Parents; IRS #3 = Impairment Rating Scale Impairment Academics; IRS #4 = Impairment Rating Scale Impairment Self-Esteem; IRS #5 = Impairment Rating Scale Impairment Family; IRS #6 = Impairment Rating Scale Overall Impairment/Need for Services.

*

p < .05.